Now showing items 75-94 of 214

    • Genetic structure in an expanding cervid population after population reduction 

      Haanes, Hallvard; Røed, Knut H.; Flagstad, Øystein; Rosef, Olav (Journal article; Peer reviewed, 2009)
      The Norwegian red deer population (Cervus elaphus) was from the mid eighteenth to the early twentieth century drastically reduced in size and distribution but has the last century expanded both demographically and spatially. ...
    • Genetic variation and structure in Norwegian red deer 

      Haanes, Hallvard (Doctoral thesis; Peer reviewed, 2008-07)
      In all species the abundance and distribution of populations vary through time and space, but recently major changes in the size and range of many populations have been observed. Population contractions and founder events ...
    • Genetic variation of ticks (Ixodes ricinus L.) in the Lithuanian and Norwegian populations 

      Paulauskas, Algimantas; Radzijevskaja, Jana; Rosef, Olav; Turčinavičienė, Jurga; Ambrasiene, Daiva; Makareviciute, Dovile (Journal article; Peer reviewed, 2006)
      RAPD markers were used to measure the genetic diversity of 119 individuals of Ixodes ricinus collected from Lithuania and Norway. The samples were analysed within and also between the populations. We analysed 74 loci in ...
    • Glacial history and palaeo-environmental change of southern Taimyr Peninsula, Arctic Russia, during the Middle and Late Pleistocene 

      Möller, Per; Benediktsson, Ívar Örn; Anjar, Johanna; Bennike, Ole; Bernhardson, Martin; Funder, Svend; Håkansson, Lena; Lemdahl, Geoffrey; Licciardi, Joseph M.; Murray, Andrew S.; Seidenkrantz, Marit-Solveig (Peer reviewed; Journal article, 2019)
      We here reconstruct a glacial and climate history of arctic NW Siberia for the last ~600,000 years, based on the stratigraphy and chronology of 35 studied river sections on the southern Taimyr Peninsula. From this stratigraphic ...
    • GPX Pro198Leu and OGG1 Ser326Cys polymorphisms and risk of development of colorectal adenomas and colorectal cancer 

      Hansen, Rikke; Sæbø, Mona; Skjelbred, Camilla Furu; Nexø, Bjørn Andersen; Hagen, Per Chr.; Bock, Günther; Lothe, Inger Marie Bowitz; Johnson, Egil; Aase, Steinar; Hansteen, Inger-Lise; Vogel, Ulla; Kure, Elin H. (Journal article; Peer reviewed, 2005)
      Little is known about genetic risk factors for colorectal cancer. We assessed the association between polymorphisms in two genes involved in DNA repair of oxidative stress, GPX and OGG1, and risk of colorectal carcinoma ...
    • Grunnundersøkelser i forbindelse med grunnvannforsyning til Gvammen, Hjartdal kommune 

      Klempe, Harald (Working paper, 1980)
      Undersøkelsesboringen viser en elveavsetning over 5 m tykt torvlag som veksler med tynne gruslag. Under følger en avsetning av stein, sand og grus. Sonderboringen 100 m unna viser nesten samme profil. Det vannførende laget ...
    • Gut retention time in captive brown bears Ursus arctos 

      Elfström, Marcus; Støen, Ole-Gunnar; Zedrosser, Andreas; Warrington, Ian; Swenson, Jon (Journal article; Peer reviewed, 2013)
      Knowing animals’ gut retention time (GRT) for important food items is critical when using non-invasive studies based on faecal remains, e.g. when analysing nutritive quality of food, or relating diet or behaviour to ...
    • Haematological and serum biochemical reference values in free-ranging red deer (Cervus elaphus atlanticus) 

      Rosef, Olav; Nystøyl, Håvard L.; Solenes, Tore; Arnemo, Jon Martin (Journal article; Peer reviewed, 2004)
      Analyses of haematological and biochemical constituents were carried out on the Norwegian subspecies of free-ranging red deer (Cervus elaphus atlanticus). All animals were captured from January to March by using a mixture ...
    • Harvesting of males delays female breeding in a socially monogamous mammal : the beaver 

      Rosell, Frank; Mysterud, Atle (Journal article; Peer reviewed, 2007)
      Human exploitation may skew adult sex ratios in vertebrate populations to the extent that males become limiting for normal reproduction. In polygynous ungulates, females delay breeding in heavily harvested populations, but ...
    • Herbivore grazing—or trampling? Trampling effects by a large ungulate in cold high- latitude ecosystems 

      Heggenes, Jan; Odland, Arvid; Chevalier, Tomas; Ahlberg, Jörgen; Berg, Amanda; Larsson, Håkan; Bjerketvedt, Dag (Journal article; Peer reviewed, 2017)
      Mammalian herbivores have important top-down effects on ecological processes and landscapes by generating vegetation changes through grazing and trampling. For free-ranging herbivores on large landscapes, trampling is an ...
    • Heritability of head size in a hunted large carnivore, the brown bear (Ursus arctos) 

      Rivrud, Inger Maren; Frank, Shane C.; Bischof, Richard; Mysterud, Atle; Steyaert, Sam; Hertel, Anne Gabriela; Hagen, Snorre; Eiken, Hans Geir; Swenson, Jon; Zedrosser, Andreas (Journal article; Peer reviewed, 2019)
      Wild animal populations experience selection pressures from both natural and anthropogenic sources. The availability of extensive pedigrees is increasing along with our ability to quantify the heritability and evolvability ...
    • Hunting promotes sexual conflict in brown bears 

      Gosselin, Jacinthe; Leclerc, Martin; Zedrosser, Andreas; Steyaert, Sam; Swenson, Jon; Pelletier, Fanie (Journal article; Peer reviewed, 2017)
      The removal of individuals through hunting can destabilize social structure, potentially affecting population dynamics. Although previous studies have shown that hunting can indirectly reduce juvenile survival through ...
    • Hunting promotes spatial reorganization and sexually selected infanticide 

      Leclerc, Martin; Frank, Shane C.; Zedrosser, Andreas; Swenson, Jon; Pelletier, Fanie (Journal article; Peer reviewed, 2017)
      Harvest can affect the ecology and evolution of wild species. The removal of key individuals, such as matriarchs or dominant males, can disrupt social structure and exacerbate the impact of hunting on population growth. ...
    • Hunting regulation favors slow life histories in a large carnivore 

      Van de Walle, Joanie; Pigeon, Gabriel; Zedrosser, Andreas; Swenson, Jon; Pelletier, Fanie (Journal article; Peer reviewed, 2018)
      As an important extrinsic source of mortality, harvest should select for fast reproduction and accelerated life histories. However, if vulnerability to harvest depends upon female reproductive status, patterns of selectivity ...
    • Identification of salmon population bottlenecks from low flows in a hydro-regulated river 

      Adeva Bustos, Ana; Hedger, Richard David; Fjeldstad, Hans-Petter; Stickler, Morten; Alfredsen, Knut (Journal article; Peer reviewed, 2019)
      Flow regime alterations from hydropower regulation may impact fish populations. Impacts can be characterized using methods for mapping bottlenecks for different species life stages. Improving the understanding of such ...
    • Importance of mountain height and latitude for the altitudinal distribution limits of vascular plants in Scandinavia: are the mountains high enough? 

      Odland, Arvid (Journal article; Peer reviewed, 2010)
      The main aim of the present paper was to study regional differences in the altitudinal distribution limits of vascular plants in relation to mountain height and latitudinal position. Altitudinal limits from previously ...
    • Improved Environmental Status: 50 Years of Declining Fish Mercury Levels in Boreal and Subarctic Fennoscandia 

      Braaten, Hans Fredrik Veiteberg; Åkerblom, Staffan; Kahilainen, Kimmo Kalevi; Rask, Martti; Vuorenmaa, Jussi; Mannio, Jaakko; Malinen, Tommi; Lydersen, Espen; Poste, Amanda; Amundsen, Per-Arne; Kashulin, Nicholas; Kashulina, Tatiana; Terentjev, Petr; Christensen, Guttorm; de Wit, Heleen (Journal article; Peer reviewed, 2019)
      Temporally (1965–2015) and spatially (55°–70°N) extensive records of total mercury (Hg) in freshwater fish showed consistent declines in boreal and subarctic Fennoscandia. The database contains 54 560 fish entries (n: pike ...
    • Increased mRNA expression levels of ERCC1, OGG1 and RAI in colorectal adenomas and carcinomas 

      Sæbø, Mona; Skjelbred, Camilla Furu; Nexø, Bjørn Andersen; Wallin, Håkan; Hansteen, Inger-Lise; Vogel, Ulla; Kure, Elin H. (Journal article; Peer reviewed, 2006-08-16)
      BACKGROUND: The majority of colorectal cancer (CRC) cases develop through the adenoma-carcinoma pathway. If an increase in DNA repair expression is detected in both early adenomas and carcinomas it may indicate that low ...
    • Infanticide as a male reproductive strategy has a nutritive risk effect in brown bears 

      Steyaert, Sam; Reusch, Christine; Brunberg, Sven; Swenson, Jon; Hackländer, Klaus; Zedrosser, Andreas (Journal article; Peer reviewed, 2013-10-02)
      Behavioural strategies to reduce predation risk can incur costs, which are often referred to as risk effects. A common strategy to avoid predation is spatio-temporal avoidance of predators, in which prey typically trade ...